CN101070443B - Coating take-free-agent composition and coating take-free method using same - Google Patents
Coating take-free-agent composition and coating take-free method using same Download PDFInfo
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- CN101070443B CN101070443B CN2006100757873A CN200610075787A CN101070443B CN 101070443 B CN101070443 B CN 101070443B CN 2006100757873 A CN2006100757873 A CN 2006100757873A CN 200610075787 A CN200610075787 A CN 200610075787A CN 101070443 B CN101070443 B CN 101070443B
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- aldehyde
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Abstract
One kind of dope eliminating adhesive compounds, the related eliminating adhesive compound contains the organic azotic compound including the -NH- group and the product of reacting with the aldehyde , the Mol ratio of the organic azotic compound including - NH- group and the aldehyde is not less than 1, the reactive temperature is 20-100degree C. The dope eliminating adhesive compound provided by the invention can make above 90% dopes eliminate the glutinosity in 0.5-30 minutes, which improves the efficiency of cleaning up dopes.
Description
Technical field
The invention relates to disappear adhesive composition and use the coating of the said composition adhering method that disappears of a kind of coating.
Background technology
The various oil paints of using in the shell coating process of existing coating process such as painting dressing automobiles industry, mechano-electronic product have usually and can not be coated to application workpiece (as the shell of above-mentioned painting dressing automobiles industry, mechano-electronic product) greatly and go up and become " crossing spray " coating." crossing spray " measures usually up to 30-40 weight %.These coating are a large amount of to the disadvantageous volatile organic solvent of HUMAN HEALTH because of containing, thereby need cleaning in time.Coating falls to the ground and is difficult to cleaning because these " cross spray ", therefore often makes this " crossing spray " coating fall into recirculated water, and the organic solvent in the coating is taken away.This recycle system generally includes indoor water tank, outdoor tank, pipeline and water pump, under the water pump effect, the water of indoor water tank and outdoor tank circulates by pipeline, thereby the solvent in the coating is taken out of outdoor with current, reduces the Health cost to the operating personnel." cross spray " coating itself is then because viscosity sticks on the flume wall greatly, on the duct wall or on the water pump, through behind the long time integration, can form the bigger lacquer of volume and roll into a ball or paint block, thus the working efficiency of the reduction recycle system.Being used to remove these methods by " crossing spray " coating at present is primary machinery blade coating mode substantially, and this mode efficient is low, need expend a large amount of time and manpower, and because coating viscosity is big, can not thoroughly clear up, and cleaning effect is poor.
In order to overcome coating " cross spray " line clogging that brings and the problem that is difficult to clear up, the coating of coating viscosity that necessary exploitation is a kind of can be eliminated effectively " crossing spray " adhesive composition that disappears is to prevent on " cross and spray " clagging pipeline or on the wall.On the other hand, also need a kind of material that makes the lacquer slag that disappears after gluing be condensed into bulk or dough, so that salvage cleaning.
Summary of the invention
The objective of the invention is that coating cleaning technology efficient is low, the shortcoming of cleaning effect difference in order to solve prior art " cross spray ", provide a kind of and can effectively eliminate " crossing spray " adhesive composition fast thereby the coating that coating viscosity makes coating be easy to clear up disappears.
Another object of the present invention provides uses the above-mentioned coating coating of the adhesive composition adhering method that disappears that disappears.
The invention provides a kind of coating adhesive composition that disappears, wherein, the described adhesive composition that disappears contains-nitrogen-containing organic compound of NH-group and the product of aldehyde reaction, contain-nitrogen-containing organic compound of NH-group and the mol ratio of aldehyde be not less than 1, and the temperature of reaction is 20-100 ℃
The present invention also provides a kind of coating adhering method that disappears, and this method comprises coating and the coating adhesive composition aqueous solution contact reacts that disappears, and wherein, the described coating adhesive composition that disappears is the coating provided by the invention adhesive composition that disappears.
The coating provided by the invention adhesive composition that disappears can be eliminated the viscosity of coating effectively, be very easy to the cleaning of " crossing spray " coating waste, and said composition organic volatile (VOC) is residual low, environmentally friendly.In addition, the coating provided by the invention sticking effect of disappearing of adhesive composition that disappears is very strong, and coating one contact with the adhesive composition aqueous solution that disappears, and viscosity is eliminated at once, the sticking speed piece that therefore disappears, and sticking acting on by force disappears." cross and spray " in the circulating water system of coating by before spraying, the adhesive composition that disappears of the present invention being joined reception in advance, can make " crossing spray " coating eliminate viscosity, thereby coating is not adhered on the pipeline and wall of circulating water system.Especially by flocculation agent being joined in the water system that contains the coating after gluing that disappears, can make the coating particles that disappears after gluing be gathered into larger-size particle or bulk, thereby be easy to salvage cleaning.The recirculated water that " cross spray " coating was cleared up in salvaging is still very limpid, can continue to recycle, thus the replacing number of times of economized cycle water greatly.Sticking not smelly through " crossing spray " the coating lacquer slag after the aforesaid method processing, further subsequent disposal is also very convenient.
Embodiment
According to the present invention, as long as contain-nitrogen-containing organic compound of NH-group and the mol ratio of aldehyde can realize purpose of the present invention greater than 1:1, but under the preferable case, the described containing-nitrogen-containing organic compound of NH-group and the mol ratio of aldehyde are 1-15:1, more preferably 3-10:1.
The nitrogen-containing organic compound of described containing-NH-group can be can with the nitrogen-containing organic compound of the various containing-NH-group of aldehyde generation nucleophilic addition, available general expression X
1-NH-X
2Expression, wherein X
1Be selected from H, NH
2, OH, NHAr, RCOOH, CN, NHCONH
2, X
2Be selected from NHAr, RCOOH, CN, NHCONH
2, wherein, Ar is an aryl, is preferably C
6-C
20Aryl, R is an aryl, is preferably C
1-C
5Alkyl.Described derivative for example can be their ammonium salts.Specifically, the example of the nitrogen-containing organic compound of described containing-NH-group can be amino acid, oxyammonia, hydrazine, Urea,amino-, acid amides and cyanamide class material.Described amino acid for example can be Padil, alanine.Above-claimed cpd can use separately or several being used in combination.Under the preferable case, the nitrogen-containing organic compound of described containing-NH-group is one or more in cyanamide, amino acid, the urea.Described cyanamide is preferably dicyanamide and/or trimeric cyanamide.
According to the present invention, described aldehyde can be to have Y
1The various acyl compounds that contain of-CO-H general expression, wherein Y
1Can be hydrogen, various alkyl or aryl, be preferably C
1-C
10Alkyl, aryl.Specifically, aldehyde of the present invention can be in formaldehyde, acetaldehyde, propionic aldehyde, butyraldehyde, isobutyric aldehyde, valeral, hexanal and the aryl aldehyde as in phenyl aldehyde, the phenylacetic aldehyde one or more, one or more in formaldehyde, acetaldehyde, propionic aldehyde and the phenyl aldehyde more preferably.
Described containing-the nitrogen-containing organic compound of NH-group and the contact reacts of aldehyde are preferably carried out under 30-80 ℃, more preferably carry out under 40-70 ℃.Because this reaction is thermopositive reaction, after for some time is carried out in reaction, can utilize the heat of reaction itself to make system keep said temperature.
For the ease of control reaction temperature, preferred described being reflected in the solvent of the present invention carried out.There is no particular limitation to described solvent, can be not react with reaction raw materials and reaction product and the effective all kinds of SOLVENTS of solubilizing reaction product, considers that from economy and environmental angle the preferred described solvent of the present invention is a water.The add-on of solvent be preferably contain-1-20 of the nitrogen-containing organic compound of NH-group and the reinforced gross weight of aldehyde doubly, more preferably 5-15 is doubly.The present invention was not particularly limited the described reaction times, and the described reaction times is preferably 1-15 hour, more preferably 3-10 hour.For reaction is more successfully carried out, the present invention preferably adds pH value conditioning agent in above-mentioned reaction process, with the pH regulator of reaction system to 1-6, more preferably 2-5.Described pH value conditioning agent preferably adds after 0.5-8 hour in the reaction beginning.The pH value is adjusted to after the 1-6, makes to be reflected to proceed 0.5-7 hour in the said temperature scope preferred 2-5 hour.Described pH regulator agent can be one or more in yellow soda ash, sodium hydroxide, sodium bicarbonate, salt of wormwood, saleratus, potassium hydroxide, volatile salt, the bicarbonate of ammonia.Described pH regulator agent can directly add with solid form or concentrated solution form, also can add with aqueous solution form.For hierarchy of control pH value more accurately, preferably add with aqueous solution form.Concentration to the above-mentioned aqueous solution is not particularly limited, for yellow soda ash, sodium bicarbonate, salt of wormwood, saleratus, volatile salt, when bicarbonate of ammonia is the pH regulator agent, preferably add with the saturated solution form.
The coating that makes the according to the method described above adhesive composition that disappears is the thick liquid of clear.The coating of the present invention adhesive composition that disappears can be eliminated the viscosity of viscosity, the especially oil paint of various coating, for example viscosity of epoxy resin, aminoresin class, Synolac class coating.
Coating method for cleaning provided by the invention comprises coating and the coating adhesive composition aqueous solution that disappears contacted, and wherein, the described coating adhesive composition that disappears is the coating provided by the invention adhesive composition that disappears.
The present invention disappears to described coating and coating, and the time that the adhesive composition aqueous solution contacts, there is no particular limitation, and it is different and slightly different specifically to look the disappear character such as the viscosity of the concentration of adhesive composition, pending " crossing spray " coating of coating.Usually, coating disappears that the concentration of adhesive composition is big more, coating disappears, and adhesive composition is more little with the weight ratio viscosity big more, " crossing spray " coating of " crossing spray " coating, and the disappearing sticking effect under the identical situation of other condition is just good more.In addition, the pH value of recirculated water is more near in the 6-9 scope, and the sticking effect that disappears is relative also good more.Adhesive composition is effective because coating of the present invention disappears, the sticking speed that disappears is fast, and under above-mentioned condition of the present invention, the coating adhesive composition aqueous solution one that disappears contacts with coating, and coating becomes without any the coating particles of viscosity at once or sinks to the bottom or bubble through the water column.When coating and the coating provided by the invention adhesive composition that disappears mixes and contact 0.5-20 minute the rate of gluing that disappears of coating is reached more than 90%.Therefore, the time of described mixing contact preferably is not less than 0.5 minute, and more preferably 0.5-30 minute, more preferably 0.5-20 minute.Adhesive composition act as irreversible reaction to disappearing of coating is sticking because coating disappears, and therefore, prolonging to mix after the sticking rate that disappears reaches 100% not to influence the sticking rate of disappearing of coating duration of contact.
In conjunction with spraying coating process reality, in order to make " crossing spray " coating thoroughly disappear sticking, disappear mode that the mixing of the adhesive composition aqueous solution contacts of coating of the present invention and coating is preferably the adhesive composition that earlier coating disappeared and joins in the circulating water system, and then begin to spray, " cross spray " coating is just contacted with the coating adhesive composition that disappears at the beginning, thereby the sticking coating of stopping not disappear contacts with circulating water system, prevents to adhere on the wall of circulating water system.The described coating adhesive composition that disappears can once join in the circulating water system, also can join in the circulating water system with the spraying process in batches.Adhesive composition is reinforced in above-mentioned which kind of mode no matter coating disappears, and preferred all recirculated water by water pump is evenly distributed in the recirculated water coating adhesive composition that disappears.The disappear add-on of adhesive composition of preferred described coating is to make the concentration of the said composition aqueous solution for being not less than 0.1 grams per liter, as the 0.2-5 grams per liter, and 1-5 grams per liter more preferably.For very big the working continuously of quantity for spray, all can contact and disappeared stickingly in order to guarantee " the cross spray " coating in the whole spraying process with the coating provided by the invention adhesive composition that disappears, can also in spraying process, constantly replenish the disappear amount of adhesive composition of coating.The disappear reinforced total amount of adhesive composition of the preferred described coating of amount that replenishes is the 5-30 weight % of coating weight, more preferably 10-20 weight %.For ease of describing, only coating is disappeared with disposable to add in the recirculated water be that example describes to adhesive composition in the specific embodiment of the invention.According to foregoing description of the present invention, those skilled in the art need not promptly to know in the working continuously when quantity for spray is excessive through creative work, the disappear adding mode of adhesive composition of coating.
Under the preferable case, the described coating adhesive composition that disappears contacts under agitation condition with the mixing of coating and carries out, and according to actual spraying coating process, above-mentioned agitation condition can be realized by the running of circulating water system itself, need not extra energy like this and stirs.Therefore, water of the present invention is the water of the water circulating pump of running.Described contact gets final product at ambient temperature, preferably carries out under 10-40 ℃.
In order to make the lacquer slag that disappears after sticking salvage cleaning easily, preferred the method for the invention also comprises flocculation agent contact with above-mentioned reaction system, makes the lacquer slag that disappears after sticking be condensed into bulk or bulk, so that salvaging is cleared up.Described flocculation agent is in above-mentioned disappear the adhesive composition aqueous solution and adding again after coating contact reacts for some time.Preferably disappearing the adhesive composition aqueous solution and coating contact reacts after 0.5-60 minute, treating promptly that also the coating sticking rate that disappears reaches and adds flocculation agent 90% or more afterwards again.More preferably after spraying finishes, add flocculation agent again.For the circulating water system that contains indoor water tank and outdoor tank, more preferably under the situation, the described adhesive composition that disappears joins in the indoor water tank, and described flocculation agent joins in the outdoor tank.The add-on of described flocculation agent is preferably every kg water system and adds the 0.2-5 gram, and more preferably 1-3 restrains described flocculation agent.In addition, simultaneously also the feeding quantity of preferred described flocculation agent be the 5-30 weight % of coating weight, more preferably 10-20 weight %.Described flocculation agent can directly directly add with solid form, also can add with aqueous solution form.
The inventor finds, the adhesive composition mating reaction that disappears of conventional tensio-active agent and coating of the present invention can realize above-mentioned cohesion purpose.Therefore, flocculation agent of the present invention contains tensio-active agent, described tensio-active agent can be cationic surfactant, aniorfic surfactant or nonionic surface active agent, can be in polyacrylamide, Sodium dodecylbenzene sulfonate, OP series emulsifying agent, NP series emulsifying agent, iso-octyl vitriol, sulfo-succinic acid two cyclohexyl sodium, dodecyl benzyl dimethyl ammonium chloride, cetyl trimethylammonium bromide, octadecyl trimethyl ammonium chloride, fatty acid polyglycol oxyethane ester, the stearoyl lactate one or more particularly.One or more in polyacrylamide, Sodium dodecylbenzene sulfonate, the iso-octyl vitriol more preferably.
Under the preferable case, flocculation agent of the present invention can also contain other various additives, for example sterilant, defoamer etc.Described sterilant and/or defoamer are that conventional sterilization agent, defoamer get final product, and its consumption is that conventional amount used gets final product.Under the preferable case, described content of additive is no more than 50 weight % of flocculation agent total amount.More preferably under the situation, be benchmark with the total amount of flocculation agent, described other various content of additive are 5-40 weight %.
Above-mentioned flocculation agent provided by the invention is suitable for various coating in the market, is particularly useful for clearing up the lacquer slag that oil paint such as epoxy resin, aminoresin class, Synolac class coating etc. form.Its usage is simple, only flocculation agent need be joined in the circulating water system to get final product.For the circulating water system that contains indoor water tank and outdoor tank, preferably flocculation agent is joined in the outdoor tank.Under above-mentioned condition of the present invention, described flocculation agent can make the coating lacquer slag form 2-50 centimetre agglomerate, therefore adopts ordinary method to salvage, and can dispose the lacquer slag that disappears after gluing, make the water of water circulating pump can continue to use, that shortens water circulating pump greatly changes the water frequency.
The following examples will the invention will be further described.
Embodiment 1
Present embodiment is used to illustrate coating provided by the invention the disappear preparation method of adhesive composition and the coating removing method of using this adhesive composition that disappears.
The ratio that with the mol ratio is 7:1 in having the round-bottomed flask of prolong adds trimeric cyanamide and propionic aldehyde, the deionized water that adds 12 times of trimeric cyanamide and propionic aldehyde gross weights simultaneously, stirring also, control reaction temperature is 40 ℃, react after 4 hours, reaction system becomes the thick liquid of clear, with sodium hydroxide regulation system pH value is 4.0, makes then to be reflected under 50 ℃ and proceeds 5 hours, and the thick liquid of gained clear is the coating adhesive composition that disappears.
The above-mentioned coating adhesive composition that disappears is joined for 40 kilograms in the spray chamber circulating water groove that 40 tons of recirculated waters are housed, and ON cycle water flowed after 10 minutes, made disappear adhesive composition and recirculated water thorough mixing even.Begin spray epoxy coating then, coating mixes with the stick that disappears under the stirring of recirculated water " to cross spray ", coating disappears with above-mentioned coating and 40 kilograms of polyacrylamides is joined in the recirculated water external flume as flocculation agent after adhesive composition contacts 5 minutes again, 0.5 after minute, coating particles all is condensed into 2-50 centimetre bulk.The equal free from extraneous odour of water in block and the water circulating pump, and recirculated water is very limpid, do not observe the clagging phenomenon on flume wall and the duct wall.
Embodiment 2
Present embodiment is used to illustrate coating provided by the invention the disappear preparation method of adhesive composition and the coating removing method of using this adhesive composition that disappears.
The ratio that with the mol ratio is 3:1 in having the round-bottomed flask of prolong adds Padil and formaldehyde, the deionized water that adds 2 times of Padil and formaldehyde gross weights simultaneously, stirring also, control reaction temperature is 70 ℃, react after 7 hours, reaction system becomes the thick liquid of clear, with sodium bicarbonate regulation system pH value is 2.0, makes then to be reflected under 75 ℃ and proceeds 2 hours, and the thick liquid of gained clear is the coating adhesive composition that disappears.
Above-mentioned composition is joined for 80 kilograms in the spray chamber circulating water groove that 40 tons of recirculated waters are housed, and ON cycle water flowed after 15 minutes, made disappear stick and recirculated water thorough mixing even.Begin the spraying amino cold coating then, coating mixes with the stick that disappears under the stirring of recirculated water " to cross spray ", after finishing, spraying do not observe the phenomenon of clagging to duct wall or on the flume wall, and then 80 kilogram of 50 weight % iso-octyl aqueous sodium persulfate solution joined in the recirculated water external flume as flocculation agent, 0.5 after minute, coating particles all is condensed into 2-50 centimetre bulk.The equal free from extraneous odour of water in block and the water circulating pump, and recirculated water is very limpid.
Embodiment 3
Present embodiment is used to illustrate coating provided by the invention the disappear preparation method of adhesive composition and the coating removing method of using this adhesive composition that disappears.
The ratio that with the mol ratio is 10:1 in having the round-bottomed flask of prolong adds urea and acetaldehyde, the deionized water that adds 20 times of urea and acetaldehyde gross weights simultaneously, stirring also, control reaction temperature is 40 ℃, react after 5 hours, reaction system becomes the thick liquid of clear, with volatile salt regulation system pH value is 6.0, makes then to be reflected under 20 ℃ and proceeds 7 hours, and the thick liquid of gained clear is the coating adhesive composition that disappears.
Above-mentioned composition is joined for 60 kilograms in the ton spray chamber circulating water groove that 40 recirculated waters are housed, and ON cycle water flowed after 10 minutes, made disappear stick and recirculated water thorough mixing even.Begin to spray phthalic resin coating then, coating mixes with the adhesive composition that disappears under the stirring of recirculated water " to cross spray ", coating disappears with above-mentioned coating and 60 kilograms of Sodium dodecylbenzene sulfonatees is joined in the recirculated water external flume as flocculation agent after adhesive composition contacts 5 minutes again, after 1 minute, coating particles is condensed into 2-50 centimetre bulk.The equal free from extraneous odour of water in block and the water circulating pump, and recirculated water is very limpid, do not observe the clagging phenomenon on flume wall and the duct wall.
Embodiment 4
Prepare disappear adhesive composition and use this adhesive composition that disappears to eliminate coating viscosity of coating according to the method for embodiment 1, different is, contain-nitrogen-containing organic compound of NH-group is that mol ratio is the trimeric cyanamide of 1:3 and the mixture of cyanamid dimerization.The coating small-particle all is condensed into 2-5 centimetre of blocky time and is approximately 3 minutes.
Embodiment 5
Prepare disappear adhesive composition and use this adhesive composition that disappears to eliminate coating viscosity of coating according to the method for embodiment 4, different is that aldehyde is that mol ratio is the formaldehyde of 1:1 and the mixture of butyraldehyde.Found that it is 5 minutes that the coating small-particle all is condensed into the blocky time.
Claims (15)
1. coating adhesive composition that disappears, it is characterized in that, the described adhesive composition that disappears contains-nitrogen-containing organic compound of NH-group and the product of aldehyde reaction, contain-nitrogen-containing organic compound of NH-group and the mol ratio of aldehyde are 3-15: 1, the temperature of reaction is 20-100 ℃, the nitrogen-containing organic compound of described containing-NH-group be selected from amino acid, oxyammonia, hydrazine, Urea,amino-, at least a in acid amides and the cyanamide.
2. composition according to claim 1, wherein, the described containing-nitrogen-containing organic compound of NH-group and the mol ratio of aldehyde are 3-10: 1, described temperature of reaction is 30-80 ℃, the reaction times is 1-15 hour.
3. composition according to claim 1, wherein, the described solvent that is reflected at exists down and carries out, and the amount of solvent is to contain-nitrogen-containing organic compound of NH-group and the 1-20 of aldehyde gross weight times.
4. composition according to claim 3, wherein, described solvent is a water.
5. composition according to claim 2 wherein, is adjusted to 1-6 with the pH value of reaction system in reaction beginning back after 0.5-8 hour.
6. composition according to claim 5, wherein, the method for regulating described pH value comprises in one or more adding reaction systems in yellow soda ash, sodium hydroxide, sodium bicarbonate, salt of wormwood, saleratus, potassium hydroxide, volatile salt, the bicarbonate of ammonia.
7. composition according to claim 5, wherein, the pH value of reaction system is adjusted to 1-6 after, be to continue under the 1-6 condition in the pH value 20-100 ℃ of reaction 0.5-7 hour down.
8. composition according to claim 1, wherein, the nitrogen-containing organic compound of described containing-NH-group is selected from one or more in amino acid, cyanamide and the urea; Described aldehyde is selected from one or more in formaldehyde, acetaldehyde, propionic aldehyde and the phenyl aldehyde.
9. coating adhering method that disappears, this method comprise coating and the coating adhesive composition aqueous solution that disappears contacted, and wherein, the described coating adhesive composition that disappears is any described coating adhesive composition that disappears among the claim 1-8.
10. method according to claim 9, wherein, the disappear add-on of adhesive composition of described coating is that to make the starting point concentration of the said composition aqueous solution be the 1-5 grams per liter.
11. according to claim 9 or 10 described methods, wherein, the disappear feeding quantity of adhesive composition of described coating is the 5-30 weight % of coating weight.
12. method according to claim 9, wherein, described coating and the coating temperature that the adhesive composition aqueous solution contacts that disappears is 10-40 ℃, and the time of mixing contact is 0.5-30 minute.
13. method according to claim 12, wherein, this method also is included in coating and coating and disappears after the adhesive composition aqueous solution contacts 0.5-30 minute, and the reaction system of the adhesive composition aqueous solution that again coating and coating disappeared contacts with flocculation agent, and described flocculation agent contains tensio-active agent.
14. method according to claim 13, wherein, the add-on of described flocculation agent is the 5-30 weight % of coating weight.
15. method according to claim 13, wherein, described tensio-active agent is one or more in polyacrylamide, Sodium dodecylbenzene sulfonate, OP emulsifying agent, NP emulsifying agent, iso-octyl sodium sulfate, sulfo-succinic acid two cyclohexyl sodium, dodecyl benzyl dimethyl ammonium chloride, cetyl trimethylammonium bromide, octadecyl trimethyl ammonium chloride, fatty acid polyglycol oxyethane ester, the stearoyl lactate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100757873A CN101070443B (en) | 2006-05-09 | 2006-05-09 | Coating take-free-agent composition and coating take-free method using same |
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|---|---|---|---|
| CN2006100757873A CN101070443B (en) | 2006-05-09 | 2006-05-09 | Coating take-free-agent composition and coating take-free method using same |
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| CN101070443A CN101070443A (en) | 2007-11-14 |
| CN101070443B true CN101070443B (en) | 2010-11-17 |
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| CN106147354A (en) * | 2015-04-23 | 2016-11-23 | 埃科莱布美国股份有限公司 | A kind of coating anti-sticking agent composite and application thereof |
| CN112778995B (en) * | 2021-01-14 | 2022-06-03 | 中原工学院 | Dynamic covalent emulsification viscosity reducer for emulsified thick oil and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0474869A1 (en) * | 1990-02-16 | 1992-03-18 | Kurita Water Industries Ltd. | Agent used in treating wet spray booth and method of treatment of said booth |
| US5302291A (en) * | 1992-09-30 | 1994-04-12 | Calgon Corporation | Method for improving the dispersibility of solvent-based paints in aqueous systems |
| CN1147265A (en) * | 1994-03-29 | 1997-04-09 | 亨凯尔公司 | Composition and process for detackifying paint |
-
2006
- 2006-05-09 CN CN2006100757873A patent/CN101070443B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0474869A1 (en) * | 1990-02-16 | 1992-03-18 | Kurita Water Industries Ltd. | Agent used in treating wet spray booth and method of treatment of said booth |
| US5302291A (en) * | 1992-09-30 | 1994-04-12 | Calgon Corporation | Method for improving the dispersibility of solvent-based paints in aqueous systems |
| CN1147265A (en) * | 1994-03-29 | 1997-04-09 | 亨凯尔公司 | Composition and process for detackifying paint |
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